1. Department of Hydrology and Atmospheric Sciences University of Arizona Tucson AZ USA
2. School of Natural Resources and the Environment University of Arizona Tucson AZ USA
3. School of Natural Resources and the Environment School of Geography Arizona Remote Sensing Center University of Arizona Tucson AZ USA
4. Department of Geological and Environmental Sciences California State University Chico CA USA
5. Southwest Watershed Research Center Tucson AZ USA
6. Schmid College of Science and Technology, Chapman University Orange CA USA
7. Department of Geosciences University of Arizona Tucson AZ USA